@import url('https://fonts.googleapis.com/css2?family=VT323&display=swap');

@font-face { font-family: 'IBM Plex Mono'; src: url('/fonts/IBMPlexMono-Regular.ttf') format('truetype'); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: 'IBM Plex Mono'; src: url('/fonts/IBMPlexMono-Medium.ttf') format('truetype'); font-weight: 500; font-style: normal; font-display: swap; }
@font-face { font-family: 'IBM Plex Mono'; src: url('/fonts/IBMPlexMono-Bold.ttf') format('truetype'); font-weight: 700; font-style: normal; font-display: swap; }

/* Tokens shared with landing.css. Keep in sync. */
:root {
  --surface-void:#000; --surface-crt:#0a0a0a; --surface-panel:#101010; --surface-raised:#1a1a1a; --surface-inverse:#aaaaaa;
  --fg-1:#cccccc; --fg-2:#888888; --fg-3:#555555; --fg-dim:#333333; --fg-inverse:#000;
  --accent:#ffb000; --accent-hot:#ffcc44; --phosphor:#33ff66; --danger:#ff5555; --info:#55ffff;
  --ansi-red:#aa0000;
  --font-mono:'IBM Plex Mono',ui-monospace,Menlo,Consolas,monospace;
  --glow-amber: 0 0 2px #ffb000, 0 0 8px rgba(255,176,0,0.6), 0 0 22px rgba(255,176,0,0.22);
  --glow-green: 0 0 2px #55ff55, 0 0 8px rgba(85,255,85,0.55), 0 0 22px rgba(85,255,85,0.22);
}

html,body { margin:0; padding:0; background:var(--surface-void); }
body {
  font-family: var(--font-mono);
  color: var(--fg-1);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* CRT chrome — dampened scanlines so prose stays readable */
.page { position:relative; min-height:100vh; background:var(--surface-crt); }
.page::before {
  content:""; position:fixed; inset:0;
  background: repeating-linear-gradient(to bottom, rgba(0,0,0,0) 0, rgba(0,0,0,0) 2px, rgba(0,0,0,0.05) 2px, rgba(0,0,0,0.05) 3px);
  pointer-events:none; z-index:1;
}
.page::after {
  content:""; position:fixed; inset:0;
  background: radial-gradient(ellipse at center, rgba(0,0,0,0) 70%, rgba(0,0,0,0.35) 100%);
  pointer-events:none; z-index:1;
}

/* Top bar — same as landing */
.bar {
  background: var(--surface-inverse); color: var(--fg-inverse);
  padding: 6px 20px; font-size: 12px; font-weight: 700;
  letter-spacing: 0.08em; text-transform: uppercase;
  display: flex; justify-content: space-between; align-items: center;
  position: relative; z-index: 20;
}
.bar a { color: var(--fg-inverse); text-decoration: none; }
.bar a:hover { text-decoration: underline; }
.bar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}
.bar-actions .sep { color: var(--fg-3); }
.bar .live::before {
  content:"●"; color:var(--ansi-red); margin-right:6px;
  animation: blink 1.06s steps(1,end) infinite;
}
@keyframes blink { 0%,49%{opacity:1} 50%,100%{opacity:0} }

/* ── Layout: two-column with sticky sidebar ─────────────────────────── */
.shell {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 32px 64px;
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 40px;
  position: relative;
  z-index: 10;
}

/* Sidebar */
.sidebar {
  position: sticky;
  top: 24px;
  align-self: start;
  font-size: 13px;
  border-right: 1px dashed var(--fg-dim);
  padding-right: 24px;
  max-height: calc(100vh - 48px);
  overflow-y: auto;
}
.sidebar .brand {
  display: block;
  color: var(--accent);
  text-shadow: var(--glow-amber);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--fg-dim);
}
.sidebar .brand small {
  display: block;
  color: var(--fg-3);
  font-size: 10px;
  letter-spacing: 0.25em;
  margin-top: 4px;
  font-weight: 400;
  text-shadow: none;
}
.sidebar .group { margin-bottom: 22px; }
.sidebar .group-title {
  color: var(--fg-3);
  font-size: 10px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  margin: 0 0 8px;
}
.sidebar ul { list-style: none; margin: 0; padding: 0; }
.sidebar li { margin: 2px 0; }
.sidebar a {
  display: block;
  padding: 3px 8px 3px 12px;
  color: var(--fg-2);
  text-decoration: none;
  border-left: 2px solid transparent;
}
.sidebar a:hover {
  color: var(--fg-1);
  border-left-color: var(--fg-3);
}
.sidebar a.active {
  color: var(--accent);
  text-shadow: var(--glow-amber);
  border-left-color: var(--accent);
  background: rgba(255,176,0,0.05);
}
.sidebar a.active::before { content: "▸ "; }

/* Article */
.article { min-width: 0; }

.crumbs {
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin: 0 0 8px;
}
.crumbs a { color: var(--fg-2); text-decoration: none; }
.crumbs a:hover { color: var(--accent); }
.crumbs .sep { color: var(--fg-dim); padding: 0 6px; }

.article h1 {
  color: var(--accent);
  text-shadow: var(--glow-amber);
  font-size: 28px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin: 0 0 6px;
  font-weight: 700;
}
.article .lede {
  color: var(--fg-2);
  font-size: 14px;
  margin: 0 0 28px;
  padding-bottom: 18px;
  border-bottom: 1px dashed var(--fg-dim);
}

/* prose typography */
.prose h1, .prose h2, .prose h3, .prose h4 {
  color: var(--fg-1);
  letter-spacing: 0.04em;
  margin: 32px 0 10px;
  font-weight: 700;
}
.prose h1 { display: none; } /* page <h1> is rendered by template, not from md */
.prose h2 {
  font-size: 18px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  text-shadow: var(--glow-amber);
  border-bottom: 1px dashed var(--fg-dim);
  padding-bottom: 6px;
}
.prose h3 { font-size: 15px; color: var(--phosphor); text-shadow: var(--glow-green); }
.prose h4 { font-size: 13px; color: var(--fg-1); text-transform: uppercase; letter-spacing: 0.12em; }

.prose p { margin: 0 0 14px; }
.prose a { color: var(--accent); text-decoration: none; border-bottom: 1px dashed var(--accent); }
.prose a:hover { background: rgba(255,176,0,0.1); }

.prose ul, .prose ol { margin: 0 0 14px; padding-left: 22px; }
.prose li { margin: 4px 0; }
.prose ul li::marker { color: var(--accent); }
.prose ol li::marker { color: var(--fg-3); }

.prose strong { color: var(--fg-1); font-weight: 700; }
.prose em { color: var(--accent); font-style: normal; }

.prose blockquote {
  margin: 14px 0;
  padding: 10px 16px;
  border-left: 2px solid var(--accent);
  background: rgba(255,176,0,0.04);
  color: var(--fg-2);
}
.prose blockquote p:last-child { margin-bottom: 0; }

/* Inline + block code — terminal-replay aesthetic, no syntax highlighting */
.prose code {
  font-family: var(--font-mono);
  font-size: 13.5px;
  background: var(--surface-raised);
  color: var(--accent);
  padding: 1px 6px;
  border-radius: 0;
  border: 1px solid var(--fg-dim);
}
.prose pre {
  background: #000;
  border: 1px solid var(--fg-dim);
  padding: 14px 16px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.5;
  margin: 0 0 16px;
}
.prose pre code {
  background: transparent;
  border: 0;
  padding: 0;
  color: var(--fg-1);
  font-size: 13px;
}
.prose pre::before {
  content: "$";
  color: var(--accent);
  margin-right: 10px;
  display: none; /* opt-in via .prose pre.shell */
}

.prose hr {
  border: 0;
  border-top: 1px dashed var(--fg-dim);
  margin: 28px 0;
}

.prose table {
  border-collapse: collapse;
  margin: 0 0 16px;
  font-size: 13.5px;
  width: 100%;
}
.prose table th, .prose table td {
  border: 1px solid var(--fg-dim);
  padding: 8px 12px;
  text-align: left;
  vertical-align: top;
}
.prose table th {
  background: #050505;
  color: var(--fg-3);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 11px;
}

/* Footer of an article */
.article .footer {
  margin-top: 40px;
  padding-top: 16px;
  border-top: 1px dashed var(--fg-dim);
  font-size: 12px;
  color: var(--fg-3);
  display: flex;
  justify-content: space-between;
}
.article .footer a { color: var(--fg-2); text-decoration: none; }
.article .footer a:hover { color: var(--accent); }

/* Index page — categorized directory listing */
.index-hero {
  margin-bottom: 28px;
  padding-bottom: 18px;
  border-bottom: 1px dashed var(--fg-dim);
}
.index-hero h1 {
  color: var(--accent);
  text-shadow: var(--glow-amber);
  font-size: 28px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin: 0 0 6px;
}
.index-hero p { color: var(--fg-2); margin: 0; font-size: 14px; }

.index-group { margin-bottom: 32px; }
.index-group h2 {
  color: var(--fg-1);
  font-size: 12px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin: 0 0 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--fg-dim);
}
.index-group h2::before { content: "§ "; color: var(--fg-3); }

.index-list { list-style: none; margin: 0; padding: 0; }
.index-list li {
  padding: 10px 14px;
  margin-bottom: 6px;
  border: 1px solid var(--fg-dim);
  background: #050505;
}
.index-list li:hover { border-color: var(--accent); }
.index-list a {
  color: var(--fg-1);
  text-decoration: none;
  font-weight: 700;
  display: block;
}
.index-list a:hover { color: var(--accent); text-shadow: var(--glow-amber); }
.index-list .desc {
  color: var(--fg-2);
  font-size: 13px;
  font-weight: 400;
  margin-top: 4px;
}

/* Mobile */
@media (max-width: 860px) {
  .bar { align-items: flex-start; gap: 8px; }
  .bar-actions { flex-wrap: wrap; justify-content: flex-end; white-space: normal; }
  .shell {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 20px;
  }
  .sidebar {
    position: static;
    max-height: none;
    border-right: 0;
    border-bottom: 1px dashed var(--fg-dim);
    padding-right: 0;
    padding-bottom: 16px;
  }
  .article h1 { font-size: 22px; }
}